In addition to the existing fines for speeding drivers, I propose to introduce a system of recording speeding and, consequently, entering the reduced - limited - speed limit for the driver as a percentage of the generally applicable speed limit on the driver's licence. The limit should be marked on the vehicle with a penalty sticker for the duration of the penalty.
e.g.: Anyone who commits the offence of speeding more than 10°% of the speed limit should, in addition to the fine, be given a record of his speed limit being -10% lower than the current speed limit, which would mean that he has to drive everywhere 10% slower than everyone else because he would otherwise be in contravention. His vehicle would also have to have penalty stickers visible to all road users.